Sawaal
23
Q:

If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to ?

A) 13/125 B) 14/57
C) 11/120 D) 16/41

Answer:   C) 11/120



Explanation:

Let the numbers be a and b.
We know that product of two numbers = Product of their HCF and LCM
Then, a + b = 55 and ab = 5 x 120 = 600.
=> The required sum = (1/a) + (1/b) = (a+b)/ab
=55/600 = 11/120

Subject: HCF and LCM
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO
Related Questions
Q:

Find the Greatest Common Factor of 280 and 144.

A) 2 B) 8
C) 6 D) 4
 
Answer & Explanation Answer: B) 8

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

6 1488
Q:

Find the LCM of 34, 51 and 68.

A) 238 B) 102
C) 136 D) 204
 
Answer & Explanation Answer: D) 204

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

3 2287
Q:

The HCF of two numbers is 12 and their LCM is 72. If one of the two numbers is 24, then the other number is

A) 60 B) 36
C) 72 D) 48
 
Answer & Explanation Answer: B) 36

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

4 1506
Q:

Find the LCM of 12, 16, 20 and 24.

A) 180 B) 220
C) 240 D) 260
 
Answer & Explanation Answer: C) 240

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

3 1459
Q:

The HCF of 24, 60 and 90 is:

A) 3 B) 6
C) 12 D) 4
 
Answer & Explanation Answer: B) 6

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

7 1402
Q:

Find the HCF & LCM of 16, 24.

A) 8, 48 B) 4, 12
C) 2, 24 D) 4, 48
 
Answer & Explanation Answer: A) 8, 48

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

4 1418
Q:

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

A) 60 B) 55
C) 50 D) 65
 
Answer & Explanation Answer: B) 55

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

6 1922
Q:

Find the largest number of three digits exactly divisible by 15, 18, 27 and 30.

A) 870 B) 900
C) 810 D) 780
 
Answer & Explanation Answer: C) 810

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: HCF and LCM
Exam Prep: Bank Exams

5 2359